US2638293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Restraining and releasing device for pilots
Assignee: RTX Corp
•
Filing: 1951-02-10
•
Granted: 1953-05-12
•
Expires: 1971-02-10
Abstract
No abstract record available.
Inventors
- 👤 Frithjof J Lindstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:30
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/0406; A42B3/0473; B; B64; B64D; B64D25/00; B64D25/08; B64D25/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US951560A
Cited
US2267103A
Cited
US2403653A
Cited
US2557313A
Cited
US2569638A
Cited
US3542248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |